SFC supports the following switches:
/Scannow - Scans all protected systems files immediately. /Scanonce - Scans all protected system files once, at the next restart. /Scanboot - Scans all protected system files every time you start your computer. /Cancel - Cancels all pending scans of protected system files. /Quiet - Replaces all incorrect file versions without prompting the user. /Enable - Enables Windows File Protection for normal operation. /Purgecache - Purges the file cache and scans all protected system files immediately. /Cachesize=n - Sets the file cache size.